Loom.



A, .5. .GHlER-NACK. l

LOOM. ABRLlcAuoN FILED MAR. 25. |914.

Patn'ted Apr. 8,1919.

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. LOOM.

APPLICATION FILED MAR. 25, 19I4.

INVENTOR Patented Apr. 8,1919.

3 SHEETS-SHEET 2 ATTO RNEYS A. E. CHERNACK.

LOOM.

APPLICATION FILED MAI1I25.. 1914.

Patentd Apr. 8,1919. 3 SHEETS-SHEET 3 y v Irwemon ATTORN EYS .ABEL E. CHERNACK, F PROVIDENCE, RHODE LOOM.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application led March 25, 1914, Serial No. 827,151.

To all whom it may concern:

Be it known that I, ABELE. CHERNACK7 a subject of the Emperor of Russia, and a resident of the city of Providence, county of Providence, and State of Rhode Island, have invented certain new and useful Improvements in Looms, of which the following is a specification.

My invention relates more particularly to the construction of looms of that class in which a large shuttle containing a large bobbin of` weft thread, and therefore of consid erable Weight, is driven positively through the shed of any desired width. My presentY improvements have reference especially to the construction and operation of the reed.

In the accompanying drawings, y

Figure 1 is a side elevation of a loom embodying my present invention; I

Fig. 2 is a corresponding longitudinal vertical section;

Fig. 3 is a sectional view, drawn to a larger scale, showing the shuttle motion and reed construction; v

Fig. 4 is a diagram to the same scale, showing the reed blades in closedposition;

Fig. 5 is a side elevation of the reed blades drawn to a still larger scale;

Fig. 6 shows a series of sectional views through these two blades along the several lines indicated in Fig. 5;

Fig. 7 shows in front and rear edge views and in side view one of the upper reed l blades;

Fig. 8 shows similarviews of one of the lower blades; f D

Fig. 9 is a diagram illustrating the differential motion of the mechanism for operatf threads from the warp beam B pass under two stationary guide beams and 36 and over an intermediate vertically-reciprocating beam 34, Fig. 2. This beam 34 slides at its opposite ends in vertical guide Ways f, f, 1n the side frames of the machine, and rests by gravlty by means of antifriction rollers 33 upon two cams 32 fixed to the ro tary crank shaft 18, toward the opposite ends o f that shaft. By this means the beam 34 rises and falls in correspondence with the shed, and the tension for the Warp beams is kept uniform.

The warp threads after leaving these 4guide Y beams .pass throughv -heddles H, which may be supported and operated-in any suitable way. In Fig. 2, I have shown them as supported by straps passing over pulleys 51 on an overhead shaft 52 in bearings on a pair of cross-beams 53. The lower ends of the respective heddles are connected to treadles 37 and 38, which are pivoted to the frame and are acted on by cams 39 and 40 secured to the cross shaft 20. f

After leaving the heddles the warps pass the shuttle, which is traversed through the warp sheds on fixed guide-ways by driving means in' accordance withv the invention forming the subject of my Patent 1,117,791, November 17, 1914, as more fully explained hereinafter.

The warps then pass through the beatingup reed, which is of the two-part type, the two parts opening for the laying of the weft thread in front of the reed and closin for the beating-up motion, and the shed orming. The cloth passes over suitable rollers b, b1 to the cloth beam B1.

For the sake of simplicity I have omitted the shuttle from Figs. 1 and 2. The `shuttle S, which is preferably shaped like an ordinary shuttle, is mounted to be traversed to and fro in a stationary raceguide bars 17 and 18 above and below the warps. The 'inner faces of these guide bars have combhlike teeth'of suilicient depth to permit the Vwarpthreads, when the shed formed,to pass into the Spaces between the way, consisting of upper and lower fixed struction.

teeth out Anf the Way of the passing shuttle, Fig. 3. These two guide bars-17 and 18 are preferably V-shaped on their guide faces to receive the correspondingly grooved peripheries of supporting and guiding rollers at the upper and lower edges of the shuttle frame.

The bobbin N is contained within the hollow portion of the shuttle, which has a projecting finger 48 u ith a guide eye at its outer end to carry the weft thread from the shuttle between the separated parts of the reed, as shown in` Fig. 3.

from .the main shaft 1 through the' medium of gears 2, 3, and 4, Fig. 1. This last mentioned gear 4 may mesh with gear 5 to drive the crank shaft 19.

This crank shaft 19, through the medium of connecting rods 23 and 24 and radius rods 22 on the cross shaft 21,' imparts a difierential reciprocating motion to the batten or lay 25, whichis pivoted at 26 to the frame (Fig. 2) and carries at its upper en d the divided reed. This divided reed is preferably built up from a series of blades and 61 which may be alikefor both the upper and lower halves of the reed. Each blade comprises a thickened base or heel m and a thin body 'n having the outline of'a right angled i triangle. YThe outer points p of-these tri- Vangular outlines are thinned to a sharp edge,

as seen-'in Figs. 5 to 8, and the lower blades Vwhich are the beating-up blades arealso somewhat thinned at their beating-up edges 0, but thickened toward' their outer edge g. The reason for 'thinning the beating-up edges o is that if left thick, they would be liable to produce a reedy eiect in the woven cloth. The upperA blades are of like con- The blades of the lower set 60 are fitted together side by side in a transverse groove in the upper side of the bar 25 of the hatten 25 and held in place by a detach-able .plate 64, Fig. 3. The blades ofthe upper set 61 are similarly secured in reverse position in the lower side of a cross bar 29, which by arms28 is pivoted at 27 to the forward side of the upper end of the batten 25. .Anti friction rollers 30 on the arms 28. run in statonary cam grooves 31 in the side frames, Figs; 2 and 3. These cam grooves are such v as to move the upper and lower reed blades 55 apart, when the batten is moved up to the shuttle. race, as seen in Fig. 3, to permit the weft to be laid in front of the reed, but when the hatten is moved in the opposite di- 1 rection toward the cloth, the upper and lower blades will approach each other, as indicated 1n Fig. 2, and be closely adjacent at the beating-up polnt, as seen in Fig. 4. The

several blades of the upper set are always in line with the corresponding blades of the lower set; and the opening and closing movements of the two parts of the reed will so far correspond with the shed-forming movevice versa only when the blades overlap each other, as in the position shown in Fig. 2, for. example. -The overlapping of the y thinned points p of one set, as seen in the The wheel 6 and its shaft 20 may be driven sectional view,-Fig. 6, not only serves to protect those points, but also helps to keep the warps in their proper places between blades or dents in forming the warp sheds.

The diii'erential movement imparted to the hatten from the crank shaft 19 will be best understood by reference to the diagrams, Fig. 9, in connection with Fig. 2. The angle of the radius rods 22 is arranged with suchv .tial movement I am able -to give' a relatively powerful blow to the batten for beatingup,-a feature of importance especially in the weaving of heavy fabrics. On the other hand, the movement of the batteri is relatively slow while the shuttle is' passing through the warps.

I claim as my invention 1. A loom, having needles and a shuttle, with a reed composed of two combs an oscillating batten 'carrying the weft-bearing portion of the reed, arms carrying the other portion of the reed and pivoted lto the hatten, and fixed cams to act on said arms to open and close the two parts of the reed as the batten is moved backward and forward.

2. .A loom, having a two-part reed,'each partcomposed of blades with bodies of triangular outline, the points being thinned,`

cam to open and close the two arts of the reed as the hatten is reciprocated.)

5. A loom, having a two-part reed, a batten carrying the two parts of the reed, movable with reference to each other as the batten reciprocates, each part vof the reed bein composed of sets of blades, all alike, an each comprising a thickened base and a f thinned body of substantially triangular outline, the blades of one set being placed in 10 reversed relation to the other set.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

ABEL E. CHERNACK.

Witnesses:

WM. C. GREENE, ALBERT S. HOWARD. 

